字符串数组中的单词条目

I'm trying to make a program that will read up to 20 words entered by the user and stored in an array of strings. The program will ask for additional words until 20 words have been entered or until the word 'done' has been entered. The idea is that these words will then be entered into a matrix to create a word search program. I'm stuck on scanning in the words entered by the user. I'm a new programmer so any words of advice is very beneficial.I'm trying to make a program that will read up